iprocurment is switching to another responsability Information The current responsibility contex

The current responsibility context has been switched to: LAU Purchasing Super User

I have two responsabilities iproc A and Iproc B

exclude all cancel functionality from iproc A, so I cannot cancel a requsition for this responsability

go to iproc

select responsability iproc A

query for a requisition

select the requsition

press cancel requsition

the system switch to another responsability where I can able to cancel the requsition

how can I stop the system to switch to another reponsability